Shin Megami Tensei 5 Fusion Calculator – Optimize Your Demon Fusions


Shin Megami Tensei 5 Fusion Calculator

Welcome to the ultimate Shin Megami Tensei 5 Fusion Calculator! This tool is designed to help you master the intricate demon fusion system in SMT V. Whether you’re planning your next powerful demon, optimizing skill inheritance, or simply exploring fusion possibilities, our calculator provides accurate predictions for your demon creations. Dive deep into the world of Da’at and forge your perfect team with strategic fusions.

Demon Fusion Planner



Select the race of your first parent demon.


Enter the current level of your first parent demon (1-99).


Select the race of your second parent demon.


Enter the current level of your second parent demon (1-99).


Check if this fusion involves a unique recipe or specific demons (may alter outcome).


Fusion Results

Predicted Result Demon Race: N/A

Predicted Base Level: N/A

Potential Level Range: N/A

Estimated Macca Cost: N/A

Formula Explanation: The resulting demon’s race is determined by a simplified fusion chart based on the parent demons’ races. The base level is an average of the parent levels, adjusted by a race-specific bonus. Macca cost is estimated based on the resulting demon’s level.

Fusion Level Comparison: Parent Levels vs. Result Level


Simplified Demon Race Fusion Chart (Example)
Parent 1 \ Parent 2 Divine Fairy Beast Jirae Vile Tyrant

What is a Shin Megami Tensei 5 Fusion Calculator?

A Shin Megami Tensei 5 Fusion Calculator is an indispensable tool for players navigating the complex demon fusion system in Atlus’s critically acclaimed RPG, Shin Megami Tensei V (SMT V). In SMT V, demon fusion is the primary method of acquiring new, stronger demons by combining two or more existing ones. This calculator helps players predict the outcome of these fusions, including the resulting demon’s race, approximate level, and estimated cost.

Who should use it: Any SMT V player looking to optimize their demon roster, plan for specific demon acquisitions, or understand the mechanics behind fusion. It’s particularly useful for strategizing skill inheritance, preparing for challenging boss battles, or completing the demon compendium.

Common misconceptions: Many believe fusion is purely trial-and-error. While experimentation is part of the fun, a Shin Megami Tensei 5 Fusion Calculator reveals the underlying rules, making the process more predictable and efficient. Another misconception is that higher-level parents always yield significantly stronger results; while level matters, race combinations and specific fusion types are often more critical for determining the resulting demon.

Shin Megami Tensei 5 Fusion Calculator Formula and Mathematical Explanation

The core of any Shin Megami Tensei 5 Fusion Calculator lies in its ability to simulate the game’s fusion mechanics. While the in-game system is incredibly intricate, involving specific demon IDs, levels, and hidden values, our calculator uses a simplified yet representative model to provide accurate predictions for common fusion scenarios.

Step-by-step Derivation:

  1. Determine Resulting Race: The primary factor is the combination of the two parent demons’ races. Each race pair typically yields a specific resulting race. For example, a Divine demon fused with a Fairy demon might consistently result in a Megami demon. This is based on a predefined fusion chart.
  2. Calculate Base Level: The base level of the resulting demon is generally an average of the two parent demons’ levels. This provides a starting point for the new demon’s power.

    Base Level = Floor((Parent 1 Level + Parent 2 Level) / 2)
  3. Apply Race Level Adjustment: Different demon races have inherent power levels. A bonus or penalty is applied to the base level based on the resulting demon’s race. Stronger races might receive a positive adjustment, while weaker ones might receive a negative one.

    Adjusted Level = Base Level + Race_Specific_Bonus
  4. Determine Potential Level Range: In SMT V, demons have a base level. The fusion result will typically be the lowest-level demon of the calculated race that is at or above the Adjusted Level. The range indicates the possible levels if multiple demons fit the criteria.
  5. Estimate Macca Cost: Fusion requires Macca (the in-game currency). The cost is usually proportional to the resulting demon’s level and sometimes the levels of the parent demons.

    Macca Cost = (Adjusted Level * 100) + ((Parent 1 Level + Parent 2 Level) * 50) (This is a simplified estimation)
  6. Special Fusion Consideration: Some fusions are “special” and involve specific demons or unique conditions. While our calculator can’t simulate every special fusion, checking this option can indicate that the standard rules might be overridden, often resulting in a fixed demon regardless of parent levels.

Variable Explanations:

Key Variables in Fusion Calculation
Variable Meaning Unit Typical Range
Parent 1 Race The demon race of the first demon used in fusion. N/A (Categorical) Divine, Fairy, Beast, etc.
Parent 1 Level The current level of the first parent demon. Level 1 – 99
Parent 2 Race The demon race of the second demon used in fusion. N/A (Categorical) Divine, Fairy, Beast, etc.
Parent 2 Level The current level of the second parent demon. Level 1 – 99
Special Fusion A boolean indicating if the fusion is a unique, predefined recipe. Boolean True/False
Result Demon Race The predicted demon race of the newly fused demon. N/A (Categorical) Megami, Fiend, Holy, etc.
Result Base Level The calculated base level of the resulting demon before specific demon adjustments. Level 1 – 99
Macca Cost The estimated in-game currency required to perform the fusion. Macca 100 – 50,000+

Practical Examples (Real-World Use Cases)

Understanding how to use the Shin Megami Tensei 5 Fusion Calculator with practical examples can significantly enhance your gameplay. Here are a couple of scenarios:

Example 1: Creating a Mid-Game Attacker

You’re in the mid-game and need a strong physical attacker. You have a Level 25 Jirae demon (e.g., Koppa Tengu) and a Level 28 Beast demon (e.g., Inugami) in your compendium.

  • Parent Demon 1 Race: Jirae
  • Parent Demon 1 Level: 25
  • Parent Demon 2 Race: Beast
  • Parent Demon 2 Level: 28
  • Special Fusion: No

Using the Shin Megami Tensei 5 Fusion Calculator:

  • Predicted Result Demon Race: Wilder (based on our simplified chart)
  • Predicted Base Level: Floor((25 + 28) / 2) = Floor(26.5) = 26
  • Potential Level Range: A Wilder demon around Level 26-30 (e.g., Nue, Mothman)
  • Estimated Macca Cost: (26 * 100) + ((25 + 28) * 50) = 2600 + 2650 = 5250 Macca
  • Interpretation: This fusion would likely yield a Wilder demon around level 26-30, which could be a good addition to your team for its physical attacks. You can then check the compendium for specific Wilder demons in that level range to see their skills and stats.

    Example 2: Planning for a High-Level Support Demon

    You’re approaching the late-game and want to fuse a powerful support demon. You have a Level 60 Divine demon (e.g., Seraph) and a Level 55 Fairy demon (e.g., Titania).

    • Parent Demon 1 Race: Divine
    • Parent Demon 1 Level: 60
    • Parent Demon 2 Race: Fairy
    • Parent Demon 2 Level: 55
    • Special Fusion: No

    Using the Shin Megami Tensei 5 Fusion Calculator:

    • Predicted Result Demon Race: Megami (based on our simplified chart)
    • Predicted Base Level: Floor((60 + 55) / 2) = Floor(57.5) = 57
    • Potential Level Range: A Megami demon around Level 57-65 (e.g., Lakshmi, Ishtar)
    • Estimated Macca Cost: (57 * 100) + ((60 + 55) * 50) = 5700 + 5750 = 11450 Macca

    Interpretation: This fusion is likely to produce a high-level Megami demon, known for their powerful healing and support abilities. This helps you narrow down your search for specific demons in the compendium and prepare the necessary Macca.

How to Use This Shin Megami Tensei 5 Fusion Calculator

Our Shin Megami Tensei 5 Fusion Calculator is designed for ease of use, allowing you to quickly get the information you need to make informed fusion decisions.

  1. Select Parent Demon 1 Race: Choose the race of your first demon from the dropdown menu.
  2. Enter Parent Demon 1 Level: Input the current level of your first demon. Ensure it’s between 1 and 99.
  3. Select Parent Demon 2 Race: Choose the race of your second demon from the dropdown menu.
  4. Enter Parent Demon 2 Level: Input the current level of your second demon. Again, ensure it’s between 1 and 99.
  5. Check “Special Fusion” (Optional): If you know you’re attempting a special fusion (which often has fixed results regardless of parent levels), check this box. While our calculator provides a general prediction, special fusions often override standard race rules.
  6. View Results: The calculator will automatically update in real-time, displaying the “Predicted Result Demon Race,” “Predicted Base Level,” “Potential Level Range,” and “Estimated Macca Cost.”
  7. Reset: Click the “Reset” button to clear all inputs and start a new calculation.
  8. Copy Results: Use the “Copy Results” button to quickly copy the main output and intermediate values to your clipboard for easy sharing or record-keeping.

How to Read Results:

  • Predicted Result Demon Race: This is the most crucial output, telling you the race of the demon you’re likely to create.
  • Predicted Base Level: This gives you an idea of the new demon’s power level relative to its parents.
  • Potential Level Range: This suggests the approximate level range of specific demons within the predicted race that you might obtain. You’ll need to consult an in-game compendium or external database for the exact demon.
  • Estimated Macca Cost: Helps you budget your in-game currency for the fusion.

Decision-Making Guidance:

Use the results from the Shin Megami Tensei 5 Fusion Calculator to:

  • Target Specific Demons: If you need a demon of a certain race (e.g., a healer Megami), you can experiment with parent combinations to find the right recipe.
  • Optimize Skill Inheritance: Knowing the resulting demon’s race and level helps you plan which skills to pass down from the parents.
  • Manage Resources: The estimated Macca cost allows you to save up before attempting high-level fusions.
  • Avoid Unwanted Fusions: Prevent accidentally fusing away valuable demons into something you don’t need.

Key Factors That Affect Shin Megami Tensei 5 Fusion Calculator Results

While our Shin Megami Tensei 5 Fusion Calculator simplifies the process, several in-game factors influence the actual fusion outcome. Understanding these can help you make more strategic decisions:

  1. Demon Race Combinations: This is the most fundamental factor. Every pair of demon races has a predetermined resulting race. Mastering this chart is key to predicting outcomes.
  2. Parent Demon Levels: The average level of the parent demons directly influences the base level of the resulting demon. Higher-level parents generally lead to higher-level results, though there are caps based on the resulting demon’s natural level.
  3. Specific Demon Identities: Beyond race and level, the exact identity of the parent demons matters. Some fusions are “fixed” or “special,” requiring specific demons regardless of their race or level to produce a unique result. Our Shin Megami Tensei 5 Fusion Calculator acknowledges this with the “Special Fusion” checkbox.
  4. Skill Inheritance Rules: SMT V has specific rules for skill inheritance. Generally, the resulting demon inherits a selection of skills from its parents. Understanding these rules (e.g., certain skills being uninheritable, affinity-based inheritance) is crucial for creating powerful builds.
  5. Essence Fusion: This separate system allows you to transfer skills and affinities from a demon’s Essence to another demon. While not directly part of traditional fusion, it heavily influences the final build of your fused demon.
  6. Compendium Registration: Fusing a demon for the first time registers it in your Compendium. This allows you to summon it later for a Macca cost. The cost to summon is often a factor in whether to fuse a new demon or resummon an old one.
  7. Moon Phases: In some SMT games, the moon phase can affect fusion outcomes (e.g., creating a “Dark” version of a demon). While SMT V’s fusion is less directly tied to moon phases for basic outcomes, it’s a classic SMT mechanic to be aware of.
  8. Difficulty Settings: While not directly altering fusion *results*, higher difficulty settings often necessitate more optimized fusions and skill inheritance, making a Shin Megami Tensei 5 Fusion Calculator even more valuable.

Frequently Asked Questions (FAQ) about Shin Megami Tensei 5 Fusion

Q: What is the primary purpose of a Shin Megami Tensei 5 Fusion Calculator?

A: The primary purpose is to help players predict the outcome of demon fusions in SMT V, allowing them to strategically plan their demon roster, optimize skill inheritance, and manage Macca resources effectively. It takes the guesswork out of demon creation.

Q: Can this calculator tell me how to get a specific demon?

A: While this simplified Shin Megami Tensei 5 Fusion Calculator focuses on predicting the result from two parents, more advanced versions (often requiring a full demon database) can provide “recipe” lookups for specific target demons. Our calculator helps you understand the *type* of demon you’ll get.

Q: Does the calculator account for skill inheritance?

A: This specific calculator focuses on race, level, and cost. Skill inheritance is a complex system based on demon affinities and available skills. While the calculator helps you identify the resulting demon, you’ll need to consult in-game menus or a dedicated SMT5 Skill Inheritance guide to plan specific skill transfers.

Q: What if my desired fusion isn’t listed in the simplified chart?

A: Our calculator uses a representative, simplified fusion chart. If a specific race combination isn’t explicitly listed, the calculator will default to a general outcome. For exhaustive results, you might need to consult a comprehensive SMT V fusion database.

Q: Is there a penalty for fusing demons of vastly different levels?

A: In SMT V, fusing demons of vastly different levels primarily affects the resulting demon’s base level, which is an average. There isn’t typically a “penalty” beyond the resulting demon potentially being lower level than your highest parent if the average pulls it down significantly.

Q: What are “Special Fusions” and how do they work?

A: Special Fusions are unique recipes that require specific demons (often three or more) to create powerful or unique demons, such as certain Fiends or Deities. These fusions often override standard race combination rules and result in a fixed demon. Our Shin Megami Tensei 5 Fusion Calculator includes a checkbox to acknowledge this possibility.

Q: How accurate is the Macca cost estimation?

A: The Macca cost estimation in this Shin Megami Tensei 5 Fusion Calculator is a simplified formula. Actual in-game costs can vary slightly based on factors like demon rarity, specific demon IDs, and whether the demon is already registered in your Compendium. It provides a good general idea for budgeting.

Q: Can I use this calculator for other Shin Megami Tensei games?

A: No, this calculator is specifically designed for Shin Megami Tensei V. While core fusion principles are similar across SMT titles, the exact fusion charts, demon races, and level calculations differ significantly between games. Always use a calculator tailored to the specific SMT game you are playing.

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